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The drawing en g2?- is not n fw/1m am sew tra @me x Laim Patent No. 74,090, dated February 4, 1868.

IMPROVEMENT In STEM-WINDING WATCHES.

Be it known that I, EDWARD HWABD, of Boston, in the county of'Suffolk, and StzxteotlA Massachusetts, have invented certain nenr and useful,Imprevementsfin'StemWindingdVatchea of which the followingis a full, clear, and exact description, reference being had to the ,accompanying drawings,rnnking a part of this specili-A cation, in which- 2,

Figure 1 represents a plan `view of the winding and "setting'mechanism.l t Figure'pZis an edge view of: the watch-frame. A Y

' Figure'fi is avienrofthe nnder side, .with aportien of the under plate broken away, to showtlre position of the 'main-spring, barrel, and the main wheel. A V

Figure 4 is a section of the same onthe line :z: z of lig. 3; and

Figure 5 is alsol ya. section on the line y y of-lig. 3. f

Figures 6 to .10 are detail viewsof various'paits ofthe mechanism.

.Similar letters indicate like parts in the several figures. Y

The object ot"my invention is to provide Aagainst injury -to the train in the event ofgthcbrealingof the inain-spring in stem-winding watches; also, to simplify the construction of the-working p aits ot' watches of this i description, and, at the same time, render them moredurable; and the invention consists in fitting' the springbox or barrel inan-openin'g in the'diahplate, 'seas toallowfthe formerv to rota-'te freely whentheispringis wound np, the said box or barrel beingprovidedwith, and support-ed inthe plate by, `a toothedflange resting 'onthedial-plate, and` confined to the same by means of screw-hends or projections oni the plate, se as to allow the spring with its barrel to be wound up,- and, by means'of a .spring-*pani engaging'in the toothed flange, thebarrelis prevented from turning in the opposite direction when thewatch is running down. l l

The invention also 'consists of'a sliding plate,which is secured to the dial-plate bymeansfof screws-passing through-slots inthe same, in combination with a button onwash'er and a to'ot`hed wheel,..i n such a) manner that, by turning thearbor or key that-passes'through the stem of the c ase in one'direction, 'the said toothed wheel will be advanced to a position to engage with an ihtermediate gear, and thus wind up the main-spring barrel, and, by turning the arbor or key inthe opposite directionthe slide will again recede, and diSen'ga-ge vthe toothed wheel from the said intermediate gear, and thns allow the arbor to be rotatedvin the opposite -direction without the necessity of releasing the hold on the stem in the act of winding up thc watch.

The invention also consists in the-peculiar method of transferring the action ot' the arbor or key from the winding-mechanism `to that for setting the hands. .I i Referring to the drawings, a represents the dial-plate, and b the under segmental plate. cis the barrel, formed with a rim or annular projection, a', that tits within an opening in the dial-plate, and so as to rotate freely therein. The periphery of the upper plate of the barrel forms n. toothed flange, c,`which rests or bears upon the dial-plate, as shown in lig. 4, and is confined to the saine by means of screw-heads d or other equivalent rneans. A' spring-pearl or click,- e, is arranged to engage in the toothed flan barrel from' turning in the-direction opposite to that'for winding up the watch. The main-spring r is attached, otono end, -to -the hub of the main-wheel arbor by means of a pinda, :is shown in fig. 4, and at the other end to a-pin or .projection on the inner= side of the rim ofthe barrel c, as shown at p), so that the main wheel and arbor will be actuated by the spring, and the barrel will be prevented from rotating, by means of the spring-pawl or v click e. The. main wheel w is firmly attached to the arbor t, one en d of which latter has its bearing in the springbarrel, and the other end'iirthe lower plate If. ff represent small gears connecting the flange cof lthe drum with the toothed wheel g. The wheel g is attached to a sliding plate, z', which is shown as somewhat enlarged \in figs.'6, 9, and 10, and has a rotating movement upon the same. Thevplatc z' is formed as shown in figs. 9 and 10. It is arranged within a recess in the dial-plate, and is allowed to slide within the said recess, to a certain extent, longitudinally, being conned to the dial-plate by means of set-screws or projections passing through slots la 7c', at its rea-r and front ends, se as to prevent any'laternl movement. Attached to the sliding plate z' is o. button or washer, 71, placed 'over thc wheel g, and connected with the plate vz' in suchn'manner as to'allow the wheel g to rotate freely on an axis which 'forms the 'connection between 4the 'said button and the sliding plate. lThe plate may he xnadc stationary, and the-,wheel g lrept in constantcontaf with the gearf, in which case it;

ge, in order to prevent the the case, so tha would be necessary to release the hold on the handlel, to continue the operationof winding up thc springbarrel. VZ, iig. 5, represents the arbor or key which winds up the watch. It isprovided with a. thumbpicce,l', by which it'is turned. Its inner portion ismade square, and on this squareportion, in an opening in the plate a, is iittcdfso as' to slide freely, a double crown-wheel, m, having a vgrooveo'r recess formed on the centre of its periphery. In this groovecrrccess tits' one arm of the lever n, \vhieh lever is pivoted or fulcrumd to the plate a, at n. To the other arm oi' the said lever, near its end, is pivoted aber, o, wl'iiehfextends to the outer edge of t it can be easily moved in and outlwhen the cover is open, and thus change the position ofthe. double crown-wheel mi, on the arbor or key l,as desired. V'.lhe lever 1t is held in either position, at the limit of its motion, by means of a spring, p1, `whose pointed end lits within a notch in across-head of the lever n, as clearly shown in iig. 1. r r represent the gears connecting the crown-wheel in with-the'mechanism that actuates the hands. I I l l V l I The' operation islas folloivs; When it is desired to wind up the watch, the handle, l', of the key or arbor is -turned in the direction shown rby lthe arrow. Thefsliding plate -is then carried forward, by the friction ofthe lntton h and the action of the crown-wheel m on the gear g, causing the latter to engage with the gear f', Aand thus communicate inotion to the drum c, in the direction of the arrow. Without releasing the hold upon the s'temfor handle 1 and turning the same in the opposite direction, the slidingl plate is retracted, and the gear gis'disconnecte'd from the wheel thus allowing the gear gto turn freely... vThe next reverse' niovement of 'th'e' handle l' again advances the gear' g to the wheel f', and'so the operation o i 'connecting and disconnecting `the gears is'frcely and successively performed,'until the-spring-barrel is nfoundu'p. I l When it is desired to set the hands, the cover ot the caso is opened, and the .arm.o is drawnout, which operatcs'the-lcver u, and thus moves the crown-wheel, d isengaging it from the 'gear g', and 'causing'it to engage with the wheel r, and thus communicate motion to the hands in either direction`, "as required, and when the hands are 'properly sct,` th'c rod o' is again pshed .-into its 'plz-ice,- restoring the crown-wheel to its position, in Contact vwith the wheel g. The onter endot the arm o is bcvellcd, and arranged in such a position, relatively with the cover of the case, that, in closing the latter, it will force -tbe arm o in, and thus disengage the crown-wheel from the contact 'with the wheel r, communicating with the hands, and restore' itv to a position, in contact'with the gear f1, for' windingnp the spring. i y thus.eonstrueting stemfwndng watches, I am enabled to secure coxnpactness in the mechanism and avoid the necessity of .increasing the thickness of the watch, and render them less liable to get'out oforder, and also to prevent injury to the train, occasioned by the breaking of 'the main-spring. Incase the inainspring shouhlhreak in the watch constructed after my improvement,- thereaction is confined to thc spring-barrel, and entirely disconnected fromv the train. i v4I do not claim a spring-barrel, which is revolved when th'e watch is being wound up, and 'which'rcinans Vstatifnary when the watch is running down, that being an old device; but, having thus described my invention, What I claim as new, and desire to secure byLettersPatent, s A 1. Applying the winding-mechanism'directly to the barrel which contains the spri for thepurpose-substantially as described. A

QSI claim the sliding plate i, in combination withthe spur' ng, inthe manner und,

wheel-g andrbntton or iasherlh, as and for the purpose set forth. 3. I claim, in combination with the arbor or key l, providcdarith amovable double crownfn'heel m, the spurr-h-eel g, sliding'plate z', and ,button h, as specified.

4. I claim the barrel c, constructed as'describe'd, and arranged within an opening i l w, spring v, and pawl a, substantially ras and for the purpose specified.

ti'on ar, and the toothed v n the plate a, in combi- `xiation with the main wheel -I v5. I claim the spring-barrel, formed'nith the plate c, the rim or annular projcc ilange c', as and'for 'the purpose set forth. I.

l In testimony whereof, I have signed my name to this specification in the presenceof two subscribing witnesses.

4 EDWARD HOWARD.

Witnesses:

J. H. ADAMS, M. S. Gswrnnn.. 

